I have a puzzling issue with my AMI implementation (totally new to this). I can successfully initiate calls to other extensions on my network. However, when I make outbound calls, they fail. I've installed Elastix using Asterisk 1.8.7.0 and FreePBX 2.8.1. On the outbound call, all I get is "goodbye" once the call has been placed. It successfully places the call but somehow it's not allowed by Asterisk?
Also note that all calls work well when using any SIP phone both to internal and external destinations! Therefore must be something I'm missing in the AMI implementation.
My manager.conf:
[user]
secret = 1111
deny=0.0.0.0/0.0.0.0
permit=192.168.0.0/255.255.255.0
read = all
write = all
Gave all permissions for read and write just to try and catch this one
My code (using Asterisk.NET):
Dim originate As New Asterisk.NET.Manager.Action.OriginateAction
originate.Channel = "SIP/106" 'This is the originating extension
originate.Context = "default" 'other option is - from-internal
originate.Exten = 7859855452
originate.Priority = 1
originate.CallerId = "106" 'This is the originating extension number
originate.Async = True
originate.Timeout = 30000
Dim response As New Asterisk.NET.Manager.Response.ManagerResponse
response = manager.SendAction(originate)
As per latest updates in Asterisk 1.8 if you are originating on external peer/trunk then channel variable will be like SIP/peer/extension instead of SIP/extension#peer
Related
We have a simulator(client) and controller(server).
The controller sends a command signal through ModbusTCP to the simulator.
I want to emulate this controller on my computer.
What I have done
For the test, I wrote pymodbus Server script on my pc and pymodbus Client script on another PC. There was no problem to read holding and input register from client pc.
I connected my clinet pc to controller(server) to know what kind of values I have to send to actual client(simulator). I found out that 8 registers(from 0 to 7) are used to store integer values.
I tried to establish a connection between my pc(sever) and simulator computer(client).I was able to establish a connection and send a response to the client.
Problem
I have no information about this client(simulator) because we have no access to the client script.
I found out that this client sends a request not only for the reading but also for writing.
When I use the holding register, I got an error "illegal data address." But the input register does not show any error. For this reason, I am using input_register to save a specific integer number.
I stored some values on input_register, but sever input_registers are written by client(simulator) as below.
write request from client(simulator)
polling server(pc) with modpoll software
Question
why write requests from the client(simulator) overwrite my input_register? As far as I know, input_register is used for only reading. I assume that I made a mistake in storing a variable on the input_register.
When I make a connection between controller and simulator, wireshark and modpoll show that client(simulator) reads registers (from 0 to 7). But when I make a connection between my server(pc) and client(simulator), my sever response with different register numbers as below. Resister number starts from 1000. Why does simulator request different register start number? ex) from 0: controller, from 1000: PC(sever)
First response from server(pc)
Update! my server can respond with the values but with wrong register numbers. I changed starting register number(0 -->1000).
I attached picture.
response from server(pc)
Please advice me on this issue.
I will do my best effort to solve this issue.
'''
from pymodbus.server.sync import StartTcpServer
from pymodbus.datastore import ModbusSequentialDataBlock
from pymodbus.datastore import ModbusSlaveContext, ModbusServerContext
from pymodbus.device import ModbusDeviceIdentification
from pymodbus.datastore import ModbusSequentialDataBlock, ModbusSparseDataBlock
from pymodbus.datastore import ModbusSlaveContext, ModbusServerContext
from pymodbus.transaction import ModbusRtuFramer, ModbusBinaryFramer
#%%
import logging
FORMAT = ('%(asctime)-15s %(threadName)-15s'
' %(levelname)-8s %(module)-15s:%(lineno)-8s %(message)s')
logging.basicConfig(format=FORMAT)
log = logging.getLogger()
log.setLevel(logging.DEBUG)
#%%
#%%
def run_server():
store = ModbusSlaveContext(
ir=ModbusSequentialDataBlock(0, [28692,28692,28692,28692,28692,65508,65508,65508
]),zero_mode=True)
context = ModbusServerContext(slaves=store, single=True)
StartTcpServer(context, address=("192.168.1.231", 502))
identity = ModbusDeviceIdentification()
identity.VendorName = 'Pymodbus'
identity.ProductCode = 'PM'
identity.VendorUrl = 'http://github.com/riptideio/pymodbus/'
identity.ProductName = 'Pymodbus Server'
identity.ModelName = 'Pymodbus Server'
identity.MajorMinorRevision = '1.0'
#%%
if __name__ == "__main__":
run_server()
'''
Dear MarcosG,
I attached screen-shots from wireshark as below.
write request from clinet(simulator)
- as you can see clinet(simulator) send a request for writing and register number start from 256.
read response from server(controller)
- Sever(controller) responds to the request of clinet for reading. And it send a respond and register number start from 256.
polling sever with modpoll software
- we can look the values on the registers of sever, as you can see, values are stored in the register from 0 to 7. These values are from controller lever. If I adjust lever, these values are changing.
requested address_exel_File
- We have one more simulator(bridge2). It shows the same register number with both controller(server) and pc(server).
problem: the actual registers of sever which store values are from 0 to 7. However, Client and server communicate with different registers (from 256) which contain "0" values. But there is no issue for adjusting parameters of ship on the simulator.
Best regards
Byeon Seongsu
I need to make calls to a rest API service via BizTalk Send adapter. The API simply uses a token in the header for authentication/authorization. I have tested this in a C# console app using httpclient and it works fine:
string apiUrl = "https://api.site.com/endpoint/<method>?";
string dateFormat = "dateFormat = 2017-05-01T00:00:00";
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Add("token", "<token>");
client.DefaultRequestHeaders.Add("Accept", "application/json");
string finalurl = apiUrl + dateFormat;
HttpResponseMessage resp = await client.GetAsync(finalurl);
if (resp.IsSuccessStatusCode)
{
string result = await resp.Content.ReadAsStringAsync();
var rootresult = JsonConvert.DeserializeObject<jobList>(result);
return rootresult;
}
else
{
return null;
}
}
however I want to use BizTalk to make the call and handle the response.
I have tried using the wcf-http adapter, selecting 'Transport' for security (it is an https site so security is required(?)) with no credential type specified and placed the header with the token in the 'messages' tab of the adapter configuration. This fails though with the exception: System.IO.IOException: Authentication failed because the remote party has closed the transport stream.
I have tried googling for this specific scenario and cannot find a solution. I did find this article with suggestions for OAUth handling but I'm surprised that even with BizTalk 2016 I still have to create a custom assembly for something so simple.
Does anyone know how this might be done in the wcf-http send adapter?
Yes, you have to write a custom Endpoint Behaviour and add it to the send port. In fact with the WCF-WebHttp adapter even Basic Auth doesn't work so I'm currently writing an Endpoint Behaviour to address this.
One of the issues with OAuth, is that there isn't one standard that everyone follows, so far I've had to write 2 different OAuth behaviours as they have implemented things differently. One using a secret and time stamp hashed to has to get a token, and the other using Basic Auth to get a token. Also one of them you could get multiple tokens using the same creds, whereas the other would expire the old token straight away.
Another thing I've had to write a custom behaviour for is which version of TLS the end points expects as by default BizTalk 2013 R2 tries TLS 1.0, and then will fail if the web site does not allow it.
You can feedback to Microsoft that you wish to have this feature by voting on Add support for OAuth 2.0 / OpenID Connect authentication
Maybe someone will open source their solution. See Announcement: BizTalk Server embrace open source!
Figured it out. I should have used the 'Certificate' for client credential type.
I just had to:
Add token in the Outbound HTTP Headers box in the Messages tab and select 'Transport' security and 'Certificate' for Transport client credential type.
Downloaded the certificate from the API's website via the browser (manually) and installed it on the local servers certificate store.
I then selected that certificate and thumbprint in the corresponding fields in the adapter via the 'browse' buttons (had to scroll through the available certificates and select the API/website certificate I was trying to connect to).
I discovered this on accident when I had Fiddler running and set the adapter proxy setting to the local Fiddler address (http://localhost:8888). I realized that since Fiddler negotiates the TLS connection/certificate (I enabled tls1.2 in fiddler) to the remote server, messages were able to get through but not directly between the adapter and the remote API server (when Fiddler WASN'T running).
We need to communicate a native application with a web application.
We think to use signalr to send the message/command.
The pipeline would be:
User clicks to make an action.
Javascript (with signalr) send a message to a server in azure.
The server re-send the message a specific client. It must be the client installed on the same machine.
Once the result is completed, NET sends the resulting reverse.
The matter is, How I can find client from the same machine in the signalr Server?
The organization in our system is:
There is center/gym.
Every center has staff who can login.
We could identify client at the same center with some file configuration. Saving our key center, for example. But, in a center, could there are more than one.NET client installed on the different computer.
We think to use the private IP of the computer to make a key on the signalr server.
var ips = [];
var RTCPeerConnection = window.RTCPeerConnection ||
window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
var pc = new RTCPeerConnection({
// Don't specify any stun/turn servers, otherwise you will
// also find your public IP addresses.
iceServers: []
});
// Add a media line, this is needed to activate candidate gathering.
pc.createDataChannel('');
// onicecandidate is triggered whenever a candidate has been found.
pc.onicecandidate = function (e) {
if (!e.candidate) { // Candidate gathering completed.
pc.close();
console.log(ips);
return;
}
var ip = /^candidate:.+ (\S+) \d+ typ/.exec(e.candidate.candidate)[1];
ips.push(ip);
};
pc.createOffer(function (sdp) {
pc.setLocalDescription(sdp);
}, function onerror() { });
This data can be obtained in .NET client without a problem. But in javascript, the previous code works regularly. In some PC, it only returns ipv4. And in Mozilla it doesn't work.
How can we identify both clients? Do You know another way to reach the goal?
Thanks,
Finally, we didn't find a good solution filtering ip adress.
We did the as follow:
We used URI schema to launch our app. URI Schema windows
Public Class RegistrarURI
Const URI_SCHEME As String = "xxx"
Const URI_KEY As String = "URL:xxx"
Private Shared APP_PATH As String = Location.AssemblyDirectory() ' "C:\Program Files (x86)\xxx.exe"
Public Shared Sub RegisterUriScheme()
Using hkcrClass As RegistryKey = Registry.ClassesRoot.CreateSubKey(URI_SCHEME)
hkcrClass.SetValue(Nothing, URI_KEY)
hkcrClass.SetValue("URL Protocol", [String].Empty, RegistryValueKind.[String])
Using defaultIcon As RegistryKey = hkcrClass.CreateSubKey("DefaultIcon")
Dim iconValue As String = [String].Format("""{0}"",0", APP_PATH)
defaultIcon.SetValue(Nothing, iconValue)
End Using
Using shell As RegistryKey = hkcrClass.CreateSubKey("shell")
Using open As RegistryKey = shell.CreateSubKey("open")
Using command As RegistryKey = open.CreateSubKey("command")
Dim cmdValue As String = [String].Format("""{0}"" ""%1""", APP_PATH)
command.SetValue(Nothing, cmdValue)
End Using
End Using
End Using
End Using
End Sub
End Class
In an Azure WebApp we launch a SignalR Server. This server will send data from our .NET app to Chrome.
To achive that, when the web is loaded, we connect to the signalR server. To build de uri, We send the connectionId from Javascript client to the .NET Client.
Then, when the native process is completed. .NET client send the information to signalR server, and this server mirrored the data to javacript client using the connectionId.
To avoid launch some instance of our native app, we use IPC channel to send data to one instance to the previous and closind the new one.
Link to source Blog source
I am developing an application in Salesforce that should communicate with a server to get some data. the server address is like this http://192.168.115.22/.
this is the HttpRequest object i am constructing in my Apex code is :
HttpRequest request = new HttpRequest();
String username = "myLogin", passwd = "myPassword";
String dataUrl = 'sli=on&fli=on&login=' + username + '&password=' + passwd + 'the rest of data';
request.setMethod('POST');
request.setEndpoint('http://192.168.115.22/Services/getLicenses');
request.setHeader('Content-Type','application/x-www-form-urlencoded');
request.setHeader('Content-Length', String.valueOf(dataUrl.length()));
request.setBody(dataUrl);
Http http = new Http();
HttpResponse response = http.send(request);
But the response i am getting contains this error :
The following error was encountered while trying to retrieve the URL: http://192.168.115.22/Licgen/Service/getLicensePackage?
Access Denied.
i don't know what is the problem with the url i am constructing, and when i write the url manually in my navigator i have access to the server.
Any help please.
This issue, in light of having already been added to the whitelist for endpoints, I think has to do with the fact that 192.168 IP addresses denote local IP addresses within a network normally.
It's likely that you can reach it because you're on your network, but Salesforce cannot see your network from the inside. You would need to use something like ngrok.com which allows you to expose a local machine to an outside available IP address.
You can also find out your router's IP address if you are at home, and port forward to your 192.168.115.22 local machine through it to expose it to the outside world, but I've had a much easier time with ngrok.com for easy integration testing with my applications.
Some Information On 192.168 addresses
(Adding this answer because my other answer could legitimately solve someone searching for the same issue above)
This issue may have to do with the fact that Salesforce prevents outside calls to un-authorized endpoints. Fortunately, it is a simple matter of adding an endpoint to the whitelist of authorized outbound connection points.
Under the setup menu option, and then again under teh security menu, there is a menu item called remote site settings. Within this option you'll see a list of sites you are allowed to access from within Salesforce. If your endpoint isn't in the list, add it and you may get a different result.
Please let me know if you have already added this to the whitelist and it is still a problem.
I need to get client's IP address in regular HttpHandler like this:
http = HttpHandler() do req::Request, res::Response
Response( ismatch(r"^/hello/",req.resource) ? string("Hello ", split(req.resource,'/')[3], "!") : 404 )
end
Neither req nor http.sock contain this information.
The Approach
This can be done, if you know the internals of Julia a little. It turns out that Julia uses the library libuv for low level system processing and that library has a function called uv_tcp_getpeername. This function is not exported by Julia.Base, but you can gain access to it via ccall. Also, the module HttpServer allows for way define a callback for various events, including the connect event.
Example Module
module HTTPUtil
export get_server
using HttpServer
function handle_connect(client)
try
buffer = Array(Uint8,32)
bufflen::Int64 = 32
ccall(:uv_tcp_getpeername,Int64,(Ptr{Void},Ptr{Uint8},Ptr{Int64}),client.sock.handle,buffer,&bufflen)
peername::IPv4 = IPv4(buffer[5:8]...)
task_local_storage(:ip,peername)
catch e
println("Error ... $e")
end
end
function get_server()
http = HttpHandler() do req::Request, res::Response
ip = task_local_storage(:ip)
println("Connection received from from $ip")
Response(ismatch(r"^/hello/",req.resource)?string("Hello ",split(req.resource,'/')[3], " $(ip)!") : 404 )
end
http.events["connect"]=(client)->handle_connect(client)
server = Server(http)
end
end
Explained
Each time a connection request is made, a peer socket is created by the server, and the connect handler is called which is defined to be handle_connect. It takes one parameter, client, of type Client. A Client type has a field called sock of type TcpSocket, and a TcpSocket has a field handle which is used by libuv. The object, then is each time a connection request is made, the connect handler is called, which calls uv_tcp_getpeername with the data contained in the TcpSocket handle. A byte array is declared to act as a buffer, which then is cast back to Base.IPv4. The module HTTPServer creates exactly 1 task for each client using #async, so the ip address can be stored local to the client using task_local_storage; thus there is no race condition.
Using it
julia> using HTTPUtil
julia> server = get_server()
Server(HttpHandler((anonymous function),TcpServer(init),Dict{ASCIIString,Function} with 3 entries:
"error" => (anonymous function)
"listen" => (anonymous function)
"connect" => (anonymous function)),nothing)
julia> #async run(server,8000)
Listening on 8000...
Task (queued) #0x000000000767e7a0
julia> Connection received from from 192.168.0.23
Connection received from from 192.168.0.22
... etc
Notes
For illustration, the output is modified so that the server will respond to each browser "Hello ipaddr"
This should be included in Base and/or HttpServer, but currently is not, so you'll need to use this workaround until it is.
The typical looping structure is used in get_server to illustrate there is no requirement for it to change, except to add in the ip address.
Assumes IPv4, but can be improved to allow both IPv4 and IPv6 straightforwardly as libuv supports both.
Thanks to waTeim's answer, but it's from 2014 and things changed in Julia. This works nicely in Julia 6.0 and probably all above:
function ip(socket::TCPSocket)
buffer = Array{UInt8}(32)
bufflen::Int64 = 32
ccall(:uv_tcp_getpeername,Int64,(Ptr{Void},Ptr{UInt8},Ptr{Int64}), socket.handle, buffer, &bufflen)
peername::IPv4 = IPv4(buffer[5:8]...)
end
Building on the excellent answer from waTeim I simplified things a little to work with IPv6, and also for SSL connections:
using MbedTLS
function handle_connect(client)
ip, port = getsockname(isa(client.sock, MbedTLS.SSLContext) ? client.sock.bio : client.sock)
task_local_storage(:ip, ip)
end
(Would have added this as a comment to Josh Bode's answer, but I don't have the necessary reputation.)
Note that it is necessary to use getpeername() instead of getsockname() as of Julia v0.7.
https://github.com/JuliaLang/julia/pull/21825
Depending on your situation, you may be able to pass a linux command.
userIP = strip(readstring(`hostname -i`), ['\n'])